Refactor APIs under ProxyClient: request, response, HTTP service
Transaction API
Merge remote-tracking branch 'upstream/master' into transactions-in-api
Implement BatchingHttpService
Merge with new Request/Response and .global infrastructures
Rename "batching_http_service" to "batching"
Fix root template; add unittest for transaction API
Fix types in request template
Merge pull request #111 from yjbanov/transactions-in-api

Transaction API; BatchingHttpService